Background:
After centuries of Danish, Swedish, German, and Russian rule,
Estonia attained independence in 1918. Forcibly incorporated into
the USSR in 1940, it regained its freedom in 1991, with the collapse
of the Soviet Union. Since the last Russian troops left in 1994,
Estonia has been free to promote economic and political ties with
Western Europe. Estonia received invitations to join NATO and the EU
in 2002.